I have a 93 impreza wagon. I have an annoying clicking/tapping sound when the engine is cold. After about 15-20 mins of drving...the sound seems to die down some. Also, it goes away after changing oil for about 1500-2000 miles then it comes back again. any one have any ideas as to what it might be?
clogged lifters? ( maybe take them out and clean them)
piston slap? ( i know the ej25 and 22's and 20's have this problem)
timing belt tensioner? ( don't know if mine has the crappy one or not)
loud injectors? ( i know they tick, but this loud?)
old age? ( 173,000 miles is a lot)
any other ideas? this things sounds like the old EA81 in the loyale's and GL wagons until it warms up. thanks in advance for the help guys.
Jeff Buchanan